| LongShlongJohn vs Jin | 72–68 | 51.43% |
| LongShlongJohn vs Kazuya | 63–59 | 51.64% |
| LongShlongJohn vs Bryan | 49–50 | 49.49% |
| LongShlongJohn vs King | 36–46 | 43.90% |
| LongShlongJohn vs Law | 30–39 | 43.48% |
| LongShlongJohn vs Paul | 27–39 | 40.91% |
| LongShlongJohn vs Hwoarang | 28–36 | 43.75% |
| LongShlongJohn vs Steve | 34–29 | 53.97% |
| LongShlongJohn vs Fahkumram | 32–28 | 53.33% |
| LongShlongJohn vs Reina | 26–31 | 45.61% |
| LongShlongJohn vs Dragunov | 26–25 | 50.98% |
| LongShlongJohn vs Lili | 23–26 | 46.94% |
| LongShlongJohn vs Yoshimitsu | 21–25 | 45.65% |
| LongShlongJohn vs Heihachi | 24–22 | 52.17% |
| LongShlongJohn vs Asuka | 19–26 | 42.22% |
| LongShlongJohn vs Devil Jin | 17–26 | 39.53% |
| LongShlongJohn vs Eddy | 25–15 | 62.50% |
| LongShlongJohn vs Azucena | 18–18 | 50.00% |
| LongShlongJohn vs Xiaoyu | 16–18 | 47.06% |
| LongShlongJohn vs Lars | 22–11 | 66.67% |
| LongShlongJohn vs Alisa | 18–15 | 54.55% |
| LongShlongJohn vs Lee | 10–22 | 31.25% |
| LongShlongJohn vs Jun | 18–14 | 56.25% |
| LongShlongJohn vs Leo | 15–12 | 55.56% |
| LongShlongJohn vs Victor | 11–15 | 42.31% |
| LongShlongJohn vs Feng | 15–10 | 60.00% |
| LongShlongJohn vs Nina | 8–15 | 34.78% |
| LongShlongJohn vs Jack-8 | 11–9 | 55.00% |
| LongShlongJohn vs Leroy | 9–9 | 50.00% |
| LongShlongJohn vs Lidia | 8–9 | 47.06% |
| LongShlongJohn vs Clive | 12–5 | 70.59% |
| LongShlongJohn vs Anna | 5–11 | 31.25% |
| LongShlongJohn vs Raven | 4–8 | 33.33% |
| LongShlongJohn vs Claudio | 4–5 | 44.44% |
| LongShlongJohn vs Kuma | 5–1 | 83.33% |
| LongShlongJohn vs Shaheen | 3–1 | 75.00% |
| LongShlongJohn vs Zafina | 2–2 | 50.00% |
| LongShlongJohn vs Panda | 1–0 | 100.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.